Rapid fault processing device based on carrier communication

Abstract

The invention belongs to the technical field of power system automation, and particularly relates to a rapid fault processing device based on carrier communication, which comprises a fusion feeder terminal FTU, and the fusion feeder terminal FTU comprises a fault detection unit, a main control unit, a medium-voltage carrier module and a power supply module. According to the invention, the medium-voltage carrier module is fused into the feeder terminal FTU, and the medium-voltage carrier is used for uplink communication, so that the communication time delay is reduced, and the construction difficulty of additionally installing a communication module is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of power system automation, and in particular relates to a rapid fault processing device based on carrier communication. Background Art

[0002] Traditional feeder terminal FTU (Field Termination Unit) communication is mostly 4G communication, which has a large and unstable communication delay. Therefore, it is mostly a centralized interactive mode controlled by the main station, and the fault location and isolation processing is relatively slow; Ethernet communication and optical fiber communication have the disadvantages of difficult construction and wiring, high cost, etc. Traditional feeder terminal FTU uplink communication adopts medium-voltage carrier communication mode, which is mostly in mountainous areas where there is no 4G signal. It is necessary to install an additional medium-voltage carrier machine, and provide power and data interaction lines to the carrier machine. Not only is the construction difficult, but most medium-voltage carrier machines require additional equipment boxes. Traditional feeder terminal FTUs are mostly centralized communication methods controlled by the main station for fault location and isolation. Multiple nodes upload the detected fault information to the main station, and then the main station determines the fault location, sends the fault removal command to the corresponding node, and then executes the action, which takes a long time to process. Summary of the invention

[0003] In view of the various shortcomings of the prior art, the inventors have researched and designed a rapid fault handling device based on carrier communication in long-term practice, integrating the medium-voltage carrier module into the feeder terminal FTU, using the medium-voltage carrier for uplink communication, and reducing communication delay.

[0004] The present invention provides a fast fault processing device based on carrier communication, including a fused feeder terminal FTU, and the fused feeder terminal FTU includes:

[0005] Fault detection unit: used to detect whether a line fault occurs;

[0006] Main control unit: processes fault data and transmits it to the medium voltage carrier module;

[0007] Medium voltage carrier module: used for carrier interactive communication with other node devices;

[0008] Power module: used to provide working power to the device.

[0009] The medium voltage carrier module includes a power supply, a main control unit, a carrier transmitting unit, and a carrier receiving unit.

[0010] Furthermore, the main control unit is responsible for data interaction with the fused feeder terminal FTU, and processing the carrier data transmitted by the carrier receiving unit, and then sending the processed data to the carrier sending unit.

[0011] Furthermore, the carrier receiving unit is responsible for receiving the power line carrier signal and transmitting it to the main control unit for analysis.

[0012] Furthermore, the carrier transmission unit is responsible for receiving the carrier data transmitted from the main control unit and transmitting it to the power line.

[0013] The method for fault handling using the device of the present invention is that a distributed interactive communication method is adopted between the fused feeder terminals FTU in each device, and the medium-voltage carrier module built into the fused feeder terminal FTU exchanges data with adjacent nodes through power line transmission, locates the fault point, and performs fault isolation.

[0014] The method for distributed interactive communication between fused feeder terminals FTU is:

[0015] ①When a line fails, each node exchanges data with adjacent upstream and downstream nodes;

[0016] ② If the current node does not detect a fault, and the upstream node detects a fault, it is determined that the fault occurs between the current node and the upstream node;

[0017] ③ If the current node does not detect a fault, and the upstream node also does not detect a fault, it is determined that the fault did not occur nearby, and other nodes will make the fault determination;

[0018] ④ If the current node detects a fault and the downstream node does not detect a fault, it is determined that the fault occurs between the current node and the downstream node;

[0019] ⑤ If the current node detects a fault and the downstream node also detects a fault, it is judged that the fault did not occur nearby, and other nodes will make the fault judgment.

[0020] The beneficial effects of the present invention are:

[0021] The medium-voltage carrier module is integrated into the feeder terminal FTU, and the medium-voltage carrier is used for uplink communication, which reduces communication latency and the difficulty of installing additional communication modules. At the same time, a distributed communication method is adopted to enable real-time interaction of fault information between nodes, quickly locate the fault location, and quickly perform fault isolation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a design principle block diagram of the rapid fault handling device of the present invention;

[0023] Figure 2 It is a design principle block diagram of the medium voltage carrier module of the present invention;

[0024] Figure 3It is a logic flow chart of distributed interaction of the medium voltage carrier module of the present invention;

[0025] Figure 4 It is a block diagram of the communication principle of the fused feeder terminal FTU of the present invention. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. These implementation examples are described in sufficient detail so that those skilled in the art can understand and practice the present invention. Without departing from the spirit and scope of the present invention, logical, achievable and other changes may be made to the implementation. Therefore, the following detailed description should not be construed as limiting, and the scope of the present invention is limited only by the claims.

[0027] See also Figure 1 , Figure 2 and Figure 4 A fast fault handling device based on carrier communication of the present invention includes a fused feeder terminal FTU, and the fused feeder terminal FTU includes:

[0028] Fault detection unit: used to detect whether a line fault occurs;

[0029] Main control unit: processes fault data and transmits it to the medium voltage carrier module;

[0030] Medium voltage carrier module: used for carrier interactive communication with other node devices;

[0031] Power module: used to provide working power to the device.

[0032] See also Figure 2 The medium voltage carrier module includes a power supply, a main control unit, a carrier transmitting unit, and a carrier receiving unit.

[0033] The main control unit is responsible for data exchange with the feeder terminal FTU, processing the carrier data transmitted by the carrier receiving unit, and then sending the processed data to the carrier sending unit, which transmits it to the power line; the carrier receiving unit is responsible for receiving the power line carrier signal and transmitting it to the main control unit for analysis; the carrier sending unit is responsible for receiving the carrier data sent by the main control unit and sending it to the power line.

[0034] The device of the present invention is used for fault processing. A distributed communication mode is adopted between the fused feeder terminals FTU in each device. The fused feeder terminal FTU has a built-in medium-voltage carrier module. When a line fault occurs, a distributed communication mode is adopted between the fused feeder terminals FTU. The built-in medium-voltage carrier module transmits data with adjacent nodes through power lines, quickly locates the fault point, and quickly performs fault isolation without the participation of the main station, thereby reducing the number of equipment installations and alleviating the difficulty of construction.

[0035] See also Figure 3 The method for the present invention to integrate the feeder terminal FTU for distributed interaction is as follows:

[0036] ①When a line fails, each node exchanges data with adjacent upstream and downstream nodes;

[0037] ② If the current node does not detect a fault, and the upstream node detects a fault, it is determined that the fault occurs between the current node and the upstream node;

[0038] ③ If the current node does not detect a fault, and the upstream node also does not detect a fault, it is determined that the fault did not occur nearby, and other nodes will make the fault determination;

[0039] ④ If the current node detects a fault and the downstream node does not detect a fault, it is determined that the fault occurs between the current node and the downstream node;

[0040] ⑤ If the current node detects a fault and the downstream node also detects a fault, it is judged that the fault did not occur nearby, and other nodes will make the fault judgment.

[0041] The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," is explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".

Claims

1. A fast fault handling device based on carrier communication, characterized in that: Including fused feeder terminal FTU, fused feeder terminal FTU includes: Fault detection unit: used to detect whether a line fault occurs; Main control unit: processes fault data and transmits it to the medium voltage carrier module; Medium voltage carrier module: used for carrier interactive communication with other node devices; Power module: used to provide working power to the device; The medium voltage carrier module includes a power supply, a main control unit, a carrier transmitting unit, and a carrier receiving unit.

2. A fast fault handling device based on carrier communication according to claim 1, characterized in that: The main control unit is responsible for data interaction with the fusion feeder terminal FTU, processing the carrier data transmitted by the carrier receiving unit, and then sending the processed data to the carrier sending unit.

3. A fast fault handling device based on carrier communication according to claim 2, characterized in that: The carrier receiving unit is responsible for receiving the power line carrier signal and transmitting it to the main control unit for analysis.

4. A fast fault handling device based on carrier communication according to claim 3, characterized in that: The carrier transmission unit is responsible for receiving the carrier data sent by the main control unit and sending it to the power line.

5. A method for troubleshooting using the device according to claims 1 to 4, characterized in that: The fused feeder terminals FTUs in each device use a distributed interactive communication method. The medium-voltage carrier module built into the fused feeder terminal FTU exchanges data with adjacent nodes through power line transmission, locates the fault point, and performs fault isolation.

6. The method according to claim 5, characterized in that The method for distributed interactive communication between fused feeder terminals FTU is: ①When a line fails, each node exchanges data with adjacent upstream and downstream nodes; ② If the current node does not detect a fault, and the upstream node detects a fault, it is determined that the fault occurs between the current node and the upstream node; ③ If the current node does not detect a fault, and the upstream node also does not detect a fault, it is determined that the fault did not occur nearby, and other nodes will make the fault determination; ④ If the current node detects a fault and the downstream node does not detect a fault, it is determined that the fault occurs between the current node and the downstream node; ⑤ If the current node detects a fault and the downstream node also detects a fault, it is judged that the fault did not occur nearby, and other nodes will make the fault judgment.

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